old-autovect-branch/gcc/testsuite/ada/acats/tests/c4/c45532d.ada

   1 -- C45532D.ADA
   2
   3 --                             Grant of Unlimited Rights
   4 --
   5 --     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
   6 --     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
   7 --     unlimited rights in the software and documentation contained herein.
   8 --     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making
   9 --     this public release, the Government intends to confer upon all
  10 --     recipients unlimited rights  equal to those held by the Government.
  11 --     These rights include rights to use, duplicate, release or disclose the
  12 --     released technical data and computer software in whole or in part, in
  13 --     any manner and for any purpose whatsoever, and to have or permit others
  14 --     to do so.
  15 --
  16 --                                    DISCLAIMER
  17 --
  18 --     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
  19 --     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
  20 --     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
  21 --     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
  22 --     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
  23 --     PARTICULAR PURPOSE OF SAID MATERIAL.
  24 --*
  25 -- OBJECTIVE:
  26 --     CHECK THAT THE OPERATOR "/" PRODUCES CORRECT RESULTS
  27 --     FOR FIXED POINT TYPES USING 3 SUBTESTS.
  28 --       THIS TEST REQUIRES MIN_WORD_LENGTH = 12.
  29 --       THIS TEST USES VALUES OF DELTA WHICH ARE GREATER THAN OR
  30 --       EQUAL TO 0.5.
  31 --
  32 --     TEST CASES ARE:
  33 --       A) THE OPERATOR /, A, B, AND A / B ALL MODEL NUMBERS.
  34 --       B) THE OPERATOR /, A, B MODEL NUMBERS A / B NOT.
  35 --       C) THE OPERATOR /, USING NO MODEL NUMBERS.
  36 --
  37 --     REPEAT FOR MINIMUM REQUIRED WORD LENGTHS OF 12, 16, 32 AND 48,
  38 --     WITH RANGE <, =, AND > THAN 1.0 AND
  39 --     WITH DELTA <, =, AND > THAN 1.0.
  40
  41 -- HISTORY:
  42 --     NTW 09/08/86 CREATED ORIGINAL TEST.
  43 --     RJW 11/05/86 REVISED COMMENTS.
  44 --     DHH 01/13/88 ADDED APPLICABILITY CRITERIA AND STANDARD HEADER.
  45 --     RDH 04/27/90 REVISED APPLICABILITY CRITERIA.
  46 --     BCB 10/03/90 REMOVED APPLICABILITY CRITERIA AND N/A => ERROR
  47 --                  LINE.  CHANGED EXTENSION FROM '.DEP' TO '.ADA'.
  48
  49 WITH REPORT;
  50 PROCEDURE C45532D IS
  51
  52      USE REPORT;
  53
  54      MIN_WORD_LENGTH : CONSTANT := 12;
  55      FULL_SCALE      : CONSTANT := 2 ** (MIN_WORD_LENGTH - 1);
  56      A_THIRD         : CONSTANT := FULL_SCALE / 3;
  57      RNG1            : CONSTANT := FULL_SCALE * 0.5;
  58      TYPE FX_0P5  IS DELTA 0.5 RANGE -RNG1 * 1 .. RNG1 * 1 - 0.5;
  59      TYPE FX_1    IS DELTA 1.0 RANGE -RNG1 * 2 .. RNG1 * 2 - 1.0;
  60      TYPE FX_RNG1 IS DELTA RNG1
  61                     RANGE -RNG1 * FULL_SCALE .. RNG1 * (FULL_SCALE - 1);
  62
  63 BEGIN TEST ("C45532D", "FIXED POINT OPERATOR ""/"" "
  64                      & "FOR DELTA <, =, AND > 1.0");
  65
  66      --------------------------------------------------
  67
  68      -- CASE A) THE OPERATOR /, A, B, AND A / B ALL MODEL NUMBERS.
  69
  70 A:   DECLARE
  71           A              : FX_RNG1 := 0.0;
  72           B              : FX_0P5  := 0.0;
  73           RESULT_VALUE   : FX_0P5  := 0.0;
  74           LOWEST_ACCEPTABLE_VALUE  : FX_0P5 := FX_0P5 (RNG1 / 2);
  75           HIGHEST_ACCEPTABLE_VALUE : FX_0P5 := FX_0P5 (RNG1 / 2);
  76      BEGIN
  77           IF EQUAL (3, 3) THEN
  78                A := FX_RNG1 (RNG1 * RNG1 / 4);    -- A MODEL NUMBER
  79                B := FX_0P5  (RNG1 / 2);           -- A MODEL NUMBER
  80           END IF;
  81
  82           RESULT_VALUE := FX_0P5 (A / B);
  83
  84           IF    (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
  85              OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
  86                FAILED ("RESULT OF ""/"" OUTSIDE RESULT MODEL INTERVAL "
  87                     &  "WHEN A, B, AND A / B ARE ALL MODEL NUMBERS");
  88           END IF;
  89      END A;
  90
  91      --------------------------------------------------
  92
  93      -- CASE B) THE OPERATOR /, A, B MODEL NUMBERS A / B NOT.
  94
  95 B:   DECLARE
  96           A              : FX_RNG1 := 0.0;
  97           B              : FX_1    := 0.0;
  98           RESULT_VALUE   : FX_0P5  := 0.0;
  99           LOWEST_ACCEPTABLE_VALUE  :  FX_0P5
 100                                    := FX_0P5 (0.5 * A_THIRD);
 101           HIGHEST_ACCEPTABLE_VALUE :  FX_0P5
 102                                    := FX_0P5 (0.5 * (A_THIRD + 1) );
 103      BEGIN
 104           IF EQUAL (3, 3) THEN
 105                A := FX_RNG1 (RNG1);               -- A MODEL NUMBER
 106                B := FX_1    (3.0);                -- A MODEL NUMBER
 107           END IF;
 108
 109           RESULT_VALUE := FX_0P5 (A / B);
 110
 111           IF    (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
 112              OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
 113                FAILED ("RESULT OF ""/"" OUTSIDE RESULT MODEL INTERVAL "
 114                     &  "WHEN A, B MODEL NUMBERS A / B NOT");
 115           END IF;
 116      END B;
 117
 118      --------------------------------------------------
 119
 120      -- CASE C) THE OPERATOR /, USING NO MODEL NUMBERS
 121
 122 C:   DECLARE
 123           A              : FX_RNG1 := 0.0;
 124           B              : FX_1    := 0.0;
 125           RESULT_VALUE   : FX_1    := 0.0;
 126           LOWEST_ACCEPTABLE_VALUE  :  FX_1
 127                                    := FX_1 ( RNG1 - 3.0);
 128           HIGHEST_ACCEPTABLE_VALUE :  FX_1
 129                                    := FX_1 ( RNG1 + 4.0);
 130      BEGIN
 131           IF EQUAL (3, 3) THEN
 132                A := FX_RNG1 (RNG1 * RNG1 / 3);    -- NOT A MODEL NUMBER
 133                B := FX_1    (RNG1 / 3);           -- NOT A MODEL NUMBER
 134           END IF;
 135
 136           RESULT_VALUE := FX_1 (A / B);
 137
 138           IF    (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
 139              OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
 140                FAILED ("RESULT OF ""/"" OUTSIDE RESULT MODEL INTERVAL "
 141                     &  "WHEN USING NO MODEL NUMBERS");
 142           END IF;
 143      END C;
 144
 145      --------------------------------------------------
 146
 147
 148      RESULT;
 149
 150 END C45532D;